Improvement in blowhead



Feb. 10, 1953 E. L. LOWE 2,527,702

IMPROVEMENT IN BLOWHEAD Filed March 25, 1950 2 SHEETSSHEET 2 g mrw IN VEN TOR.

Patented Feb. 10, 1953 UNITED STATES N T OFFICE IMPRG-VEMENT iN BLOWHEAi-D Lf'llo'ive, Winchester, res. eradication March 25, 195e, senaim. isizsee screens. (01. '49-'18) 1 The present invention relates to improvements in nozzle structures particularly useful and adapted for blowing and internally'cooling' arti- 'cles of glassware in the blowheads inwhich glassware is adapted to'be given it'sfinal shape.

My invention reducesstr'ainand check marks in the bottle finish by causingair'to swirl and move around bottle finishesinsuch'a manner as to distribute air circulation in a more even manner than now acc-omplis'hedby'nozzles of other blowheads.

This object is accomplished,as hereinafter described and shown, by a simply constructed nozzle easily manufactured and operated, and having air ports constructed on-an angle to the periphery of the nozzle. I

Referring to the drawings attached hereto for the purpose of disclosing certain embodiments illustrative of my invention, in'which Figure 1 is a longitudinal sectional View of a blowhead embodying features'of my invention.

, Figure 2 is a plan view of the nozzle showing the lateral angular displacement of air ports within for airstream flow.

Figure 3 shows my invention in side elevation view.

Figure 4: is a bottom view of my invention showing air ports on periphery and center openlng.

In the embodiment of my invention as illustrated, the nozzle 10 as shown in Figure 1 is adapted to be utilized in a blowhead 9 or the like and mold E3 of conventional design for holding a glass bottle after initial forming.

My nozzle I is made of suitable metal and is in the form of a single major element which in Figure 1 and Figure 3 has the appearance of a large bolt with head portion [5, bevel portion 23, concave portion 26, threaded shank portion I6. Associated with said nozzle ll! is a lock washer I4, and lock nut 15 to secure my invention within a collar 12 and lock ring [2' of the blowhead 9 which is not of my invention but of a conventional type.

It is believed that other means to hold the said invention within the collar such as a through pin or the like, could be used and is contemplated without departing from the scope of my invention.

Nozzle has a center passage l1 bored of a relatively larger diameter than passage is which continues through nozzle 10 to the outer end of head portion If: as indicated in Figure 1. The central passage ll includes an underbored portion within head 15 forming a connecting well H or undercut portion,for passages ll, ISand radiating exit passages 19. Aplurality 'of-passages 19 are bored to extendfromwell IT or undercut portion to the'periphery of bevel2-3, near the edge of concave'topl8. Passages! are adapted to direct a portion'of cooling "airstream '21 from withinnozzlel't to the exterior ofthe same near the bottle finish area 22 as designated in Figurel. jBy reason of the angular position ofpassages I-Sthat portionof airstream 2| emerging from said passages adopt a swirlin circuitous path around finish-24 in area 22, as indicated in Figure 2, at the same time-another portion 29 of cooling airstream 2| is directed vertically into the interior of bottle finish 24 thus achieving asubstantially even distribution of airstream 2| on both sides of finish 24-simultaneously. Airstream directed vertically into bottle 25 bouncing upwards isrefiected back by a concave lower face portion 26 of the nozzle It! thus assisting in thecomplete distribution of air around finish24.

In order toreduce budging, strain marks and check marks in a bottle finish '24 it is essential that cooling air 2| be substantially evenly distributed in adequate quantity on both sides of finish 24 as described herein.

Having shown and described my invention, I claim 1. A nozzle comprising an element substantially bolt shaped in appearance having a head portion and a threaded shank portion, said element being centrally bored with connecting passages of difierent diameters, said passages joined within said head portion at an undercut portion, a plurality of passages of smaller diameter than said bore starting from said undercut portion :at an angle thereto and extending to the outer side of said head portion, said head portion formed with a concave lower face portion, said nozzle being a portion of a blowhead adapted to contain a bottle finish therein and means adapted to secure said element to other elements of the blowhead.

2. In a bottle finish blowhead having a bottle finish receiving recess, a nozzle for distributing cooling air, said nozzle being positioned within said recess and including a shank portion connected to said blowhead, a central bore through said shank portion communicating with an air supply passage of said blowhead, an enlarged head integral with said shank portion and having a reduced continuation of said central bore therethrough, an undercut portion formed at the juncture of said central bore and its reduced continuation, angularly disposed passages extending downwardly through said head portion from said undercut portion, said passages being disposed at angles to planes passed through their upper centers and the axis of said central bore, said reduced continuation of said central bore being adapted to supply air to an interior of a bottle finish simultaneous with swirling movement of air from said passages about the exterior of said bottl finish.

3. In a bottle finish blowhead having a bottle finish receiving recess, a nozzle for distributing cooling air, said nozzle being positioned within said recess and including a shank portion connected to said blowhead, a central bore through said shank portion communicating with an air supply passage of said blowhead, an enlarged head integral with said shank portion and having a reduced continuation of said central bore therethrough, an undercut portion formed at the juncture of said central bore and its reduced continuation, angularly disposed passages extending downwardly through said head portion from said undercut portion, said passages being disposed at angles to planes passed through their upper centers and the axis of said central bore, said reduced continuation of said central bore being adapted to supply air to an interior of a bottle finish simultaneous with swirling movement of air from said passages about the exterior of said bottle finish, said nozzle having a concave lower face portion for reflecting air down into said bottle finish.

4. In a bottle finish blowhead having a bottle finish receiving recess, a nozzle for distributing cooling air, said nozzle being positioned within said recess and including a shank portion connected to said blowhead, a central bore through said shank portion communicating with an air supply passage of said blowhead, an enlarged head integral with said shank portion and having a reduced continuation of said central bore therethrough, an undercut portion formed at the juncture of said central bore and its reduced continuation, anguiarly disposed passages extending downwardly through said head portion from said undercut portion, said passages being disposed at angles to planes passed through their upper centers and the axis of said central bore, said reduced continuation of said central bore being adapted to supply air to an interior of a bottle finish simultaneous with swirling movement of air from said passages about the exterior of said bottle finish, said head portion having a beveled lower peripheral edge, said beveled edge being in spaced parallel relation to said undercut portion.

5. A blowhead comprising a collar having a central bottle finish recess therein, a nozzle carried by said collar, said nozzle having a shank portion connected to said collar and a head portion disposed in said recess, said shank portion having a central bore therethrough adapted to be communicated with a cooling air source, a central passage through said head portion, downwardly and outwardly directed passages opening through outer portions of said head portion, each of said downwardly and outwardly directed passages being at an angle to both the vertical axis of the nozzle and a plane passed through said vertical axis, said passages being adapted to simultaneously direct cooling air into the interior of and in a swirling movement about the exterior of a bottle finish.

EARL L. LOWE.

CL'JS CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,783,291 Soubier Dec. 2, 1930 1,940,615 Webster Dec. 19, 1933 2,198,750 Winder Apr. 30, 1940 2,290,798 Berthold July 21, 1942 2,347,181 Cox Apr. 25, 1944 

